A small group of quantum computing stocks have generated unbelievable returns over the past year.Quantum computing isn't as well known as artificial intelligence (AI), but a small group of these stocks has generated astounding returns in just a year or two.These companies are trying to build and commercialize the next innovation of the computer. Instead of using bits, the most basic unit of digital information and the foundational component of the computer, quantum computers use qubits that can process data ...